Cholesterol is necessary for the production of hormones, bile salts and vitamins in our body. High levels of bad cholesterol (LDL) may cause plaque formation on artery walls, while good cholesterol (HDL) facilitates removal of excess cholesterol thus decreasing the risk of heart diseases. Maintain a good cholesterol balance with soluble fiber intake (to lower bad LDL), and Omega-3 fatty acids (to raise good HDL). Cold water fish (salmon, sardine and mackerel) are rich in Omega-3 fatty acids. Alternatively, try flax seeds and soy beans.